A kind of hollow building cover of permanent assemblied mould arranged along beam and job practices thereof
(1) technical field
The present invention relates to the floor system in a kind of reinforced concrete structure, belong to buildings in general structure field.
(2) background technology
At building field, along with the large-span concrete structure is increasing, increasing floor adopts the hollow building cover structure technology, also emerges vertical many innovative technologies in the hollow building cover field.Patented technology " thin-wall hollow roof in-situ deposited with concrete " (ZL99232922.1) discloses the technology that a kind of thin wall cylinder is used in cast-in-situ concrete; " a kind of steel bar concrete tubulose cassette ceiling " (ZL01140463.9), " a kind of steel bar concrete tubulose light floor " (ZL01140466.3) and " a kind of cast-in-place concrete cored " (application number 200510067584.5) continue to the tubulose filler application in cassette ceiling and innovate." a kind of large span prestressing without bondn cast-in-place hollow slab " (ZL00264800.8), " a kind of large span bonded prestress cast-in-place hollow slab " (ZL03236960.3), " in-situ deposited prestressed hollow reinforced concrete roof and job practices thereof " (ZL00113548.1) and " in-situ deposited prestressed hollow reinforced concrete roof and job practices thereof " (ZL00113550.3) etc. included prestressed characteristics in the patented technology, expanded the range of application of hollow building cover.Above technology is mainly used in the one-way slabs structure, make tubulose (or bar-shaped) filler to use in two-way slab, at first to solve be along tube side to the inconsistent problem of cross tube direction mechanical property." by the prestressed concrete cast-in-place hollow slab of light material assembled unit filling " (ZL03146341.X) arranged the light material assembled unit by present position main stress direction, overcome the bad shortcoming of cross tube direction mechanical property, reaches good effect." in-situ cast hollow reinforced concrete slab pre-provided with hollow hard thin-wall members and job practices thereof " (ZL99115648.X) and other similar patent, take " have between the two ends of cavity hard thin-wall members and member between rib between the Cast-in-place concrete end that intersects of the vertical rib of Cast-in-place concrete; between the Cast-in-place concrete end rib on same straight line, constitute with the crossing elongated end of Cast-in-place concrete of the vertical rib of many Cast-in-place concretes between rib." way, the part remedied cross tube direction mechanical property defect of bad, also can be applied to two-way slab.But, be the category that one-way slabs or two-way slab all belong to the edge-supported slab building cover structure; In engineering, be to belong to post supporting building cover structure in addition greatly, dark beam or flat beam promptly only are set on the post.For post supporting hollow building cover structure,, generally all adopt horizontal projection to be similar to foursquare sheet or box object filling superstructure for the mechanical property that makes the plate level both direction approaches isotropism; Typical technology have " a kind of close rib building roof " (ZL02142351.2), " a kind of reinforcing-bar three-dimensional bearing roof " (ZL02117549.7), " a kind of hollow floor slab with hidden and dense ribs " (ZL 01139995.3) and " a kind of cast-in-place concrete cored " (application number 200510078278.1); The technology of having included the prestressing force characteristic in have " composite prestressed concrete frame invert-Chen-Shuibian beam floor " (95224061.0), " compound flat slab construction system of cast-in-situ prestressed concrete sandwich and building method " (ZL200310116977.1), " cast-in-situ prestressed concrete whole compound slab " (01279685.9).Comprise ZL99115648.X and other similar patented technology though have at present to utilize, tubulose or bar-shaped filler are applied to post supporting hollow building cover example of structure; But owing to there is a bad shortcoming of cross tube direction mechanical property, when tubulose or bar-shaped filler are all arranged along a direction, in order to guarantee the structural safety of cross tube direction, usually will increases thickness of slab or strengthen arrangement of reinforcement, so all be uneconomic.Though the hollow rate of the hollowcore slab floor of being filled by sheet or box object is higher, also solve the problem of bidirectional stress simultaneously, it is also not too convenient to construct, concrete closely knit in order to guarantee, usually concreting at twice; Not only construction trouble influences concrete pouring quality toward contact.In this case, develop a kind of above deficiency of avoiding, tubulose or bar-shaped filler can be applied to post supporting hollow building cover structure technology, become current builing industry urgent problem.
(3) summary of the invention
In the hollowcore slab that tubulose or bar-shaped filler are filled, to the length direction that refers to along filler, cross tube direction refers to the cross-sectional direction along filler along tube side, along tube side to stress performance be better than cross tube direction; In post supporting building cover structure, when both direction post net standard width of a room in an old-style house size was unequal, generally speaking, the suffered power of the length direction of post net was bigger; It is exactly with respect to the span centre strip that post supporting building cover structure also has a mechanics feature, and slab strips on columns is the main stress district of structure.
Purpose of the present invention is exactly in order to solve the technical problem that tubulose or bar-shaped filler can not be advantageously applied to post supporting hollow building cover structure, a kind of post supporting hollow building cover form of structure and job practices that promptly meets mechanics principle, easy construction again to be provided.
For achieving the above object, the technical solution used in the present invention is:
Mechanics feature according to the hollow building cover different parts, form a kind of hollow building cover of permanent assemblied mould arranged along beam, comprise pillar, beam, post limit solid area, beam limit hollow section, central hollow district, in beam limit hollow section and central hollow district, permanent assembling die is installed.
In the hollow section of beam limit permanent assembling die towards, refer to the length direction of bar-shaped filler in the assembling die, with its adjacent beam direction consistent; Permanent assembling die towards consistent in the central hollow district with the long span direction of hollow building cover post net.
Characteristic according to post border stress is concentrated is provided with a post limit solid area in the post border, do not place filler in the solid area, and the flat shape of post limit solid area is rectangle or circular arc.
Construction for convenience, utilize connector that bar-shaped filler is combined into permanent assembling die, in beam limit hollow section and central hollow district, permanent assembling die is installed, in each permanent assembling die, be provided with internal-rib between the adjacent bar-shaped filler, interior rib width is 40-100mm.
In beam limit hollow section and central hollow district, establish the interblock rib between the adjacent permanent assembling die, the interblock rib width is 50-300mm.
It is dark beam or flat beam that beam is set on post, is dark beam when the thickness of depth of beam and plate is identical, when depth of beam is flat beam greater than plate thickness and beam width during greater than its height.
When big or load is big when structural span, can in dark beam or flat beam, dispose presstressed reinforcing steel; If needed presstressed reinforcing steel quantity more for a long time, presstressed reinforcing steel is also configurable in interblock rib or beam limit hollow section in the internal-rib of permanent assembling die.
The cross-sectional form of bar-shaped filler has multiple choices, can be composite figure, the circle of broken line shape, straight line and circular arc, and the ratio scope of the height in bar-shaped filler cross section and width is 0.4-3.0, and bar-shaped filler can be hollow section or solid bar.
In order to guarantee the transmission of power, the interblock rib between same row or the permanent assembling die of same row is located on the same line.
Sequence of construction of the present invention is: lay template, setting-out on template, mark off the position in beam, post limit solid area, beam limit hollow section, central hollow district, in beam limit hollow section, central hollow district, mark the position of each permanent assembling die, the reinforcing bar of colligation beam, the following iron of colligation plate, utilize connector that bar-shaped filler is assembled into permanent assembling die, position in accordance with regulations and direction are laid permanent assembling die, lay presstressed reinforcing steel in beam or interblock rib and internal-rib, the last iron of colligation plate, concreting, tensioned prestressing bar, stripping.
After adopting such scheme, the present invention compared with prior art has following beneficial effect:
The present invention has widened tubulose or the range of application of bar-shaped filler in superstructure, can be advantageously applied in the post supporting superstructure.Permanent assembling die of the present invention can be assembled in advance, does not take construction period, and bar-shaped filler can satisfy the technological requirement of concrete primary concreting moulding, and the present invention can accelerate the construction speed of hollow building cover greatly.Permanent assembling die arrangement proposed by the invention meets mechanics principle, can give full play to the stress-bearing capability of member, reaches the purpose that reduces material usage to greatest extent, thereby obtains good economic benefit.The hollow building cover span of a kind of permanent assemblied mould arranged along beam of the present invention is big, in light weight, sound insulation, good heat-insulation effect, and reliability of structure, shock resistance, crack resistance are also better.The present invention has excellent economy and applicability, and the development of Building technology is played a driving role.
(4) description of drawings
The present invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the plane zoning plan of hollow building cover of the present invention.
Fig. 2 is the layout plan of permanent assembling die when post limit solid area is rectangle.
Fig. 3 is the layout plan of permanent assembling die when post limit solid area is circular arc.
Fig. 4 is single permanent assembling die planar configuration figure among the present invention.
Fig. 5 is a single permanent assembling die cross section constructional drawing among the present invention.
Fig. 6 is that permanent assembling die is installed in cross section constructional drawing in the superstructure among the present invention.
Fig. 7 is the cross section constructional drawing of hollow building cover beam of the present invention when being dark beam.
Fig. 8 is the cross section constructional drawing of hollow building cover beam of the present invention when being flat beam.
Fig. 9 is the cross section constructional drawing when being furnished with presstressed reinforcing steel in the hollow building cover beam of the present invention.
Figure 10 is the different cross-sectional forms that bar-shaped filler had among the present invention.
Figure 11 is that the bar-shaped filler of expression is solid.
Figure 12 is that the bar-shaped filler of expression is hollow.
Figure 13 is the cross section constructional drawing when being furnished with presstressed reinforcing steel in the permanent assembling die internal-rib.
Figure 14 is the floor map that the interblock rib of same row or same row is located on the same line.
Figure 15 is the cross section constructional drawing when being furnished with presstressed reinforcing steel in the permanent assembling die interblock rib.
Among the figure: 1. pillar, 2. beam, 3. post limit solid area, 4. beam limit hollow section, 5. central hollow district, 6. permanent assembling die, 7. bar-shaped filler, 8. connector, 9. internal-rib, 10. interblock rib, 11. presstressed reinforcing steel, 12. broken line shape cross section, the composite figure cross section of 13. straight lines and camber line, 14. circular cross sections.
(5) specific embodiment
The present invention realizes in such a way:
In Fig. 1, subregion is carried out by pillar (1), beam (2), post limit solid area (3), beam limit hollow section (4), central hollow district (5) in the superstructure plane, in beam limit hollow section (4) and central hollow district (5), permanent assembling die (6) is installed.
Fig. 2, embodiment illustrated in fig. 3 in, the post limit solid area (3) of a rectangle or circular arc is set in the post border, do not place filler in the solid area, only in beam limit hollow section (4) and central hollow district (5), permanent assembling die (6) is installed.In the beam limit hollow section (4) permanent assembling die (6) towards with its adjacent beam (2) direction consistent, permanent assembling die (6) towards consistent in central hollow district (5) with the long span direction of hollow building cover post net.
Fig. 4, Fig. 5, embodiment illustrated in fig. 6 in, permanent assembling die (6) is combined by bar-shaped filler (7) and connector (8), in each permanent assembling die (6), be provided with internal-rib (9) between the adjacent bar-shaped filler (7), internal-rib (9) width is 40-100mm.In beam limit hollow section (4) and central hollow district (5), be provided with interblock rib (10) between the adjacent permanent assembling die (6), interblock rib (10) width is 50-300mm.
In the embodiment shown in fig. 7, the height of beam (2) is identical with the thickness of plate, is dark beam.
In the embodiment shown in fig. 8, the height of beam (2) is greater than plate thickness, and the width of beam (2) is flat beam greater than its height.
In the embodiment shown in fig. 9, is furnished with presstressed reinforcing steel (11) in the beam (2).
In the embodiment shown in fig. 10, bar-shaped filler (7) cross-sectional form that constitutes permanent assembling die (6) can be the composite figure (13) of broken line shape (12), straight line and camber line, circular (14), and the height in bar-shaped filler (7) cross section and the ratio scope of width are 0.4-3.0.
Figure 11, embodiment illustrated in fig. 12 in, bar-shaped filler (7) promptly can be a hollow section, can be again solid bar.
In the embodiment shown in fig. 13, is furnished with presstressed reinforcing steel (11) in the internal-rib (9) of permanent assembling die (6) in the beam limit hollow section (4).
In the embodiment shown in fig. 14, the interblock rib (10) between same row or the permanent assembling die of same row (6) is located on the same line.
In the embodiment shown in fig. 15, is furnished with presstressed reinforcing steel (11) in the interblock rib (10).
A kind of suitable beam of the present invention arranges that the job practices of the hollow building cover of filler rod combination block is:
1, lay template, setting-out on template, mark off beam (2), post limit solid area (3), beam limit hollow section (4), the position in central hollow district (5), at beam limit hollow section (4), mark the position of each permanent assembling die (6) in the central hollow district (5), the reinforcing bar of colligation beam, the following iron of colligation plate, utilize connector (8) that bar-shaped filler (7) is assembled into permanent assembling die (6), position in accordance with regulations and direction are laid permanent assembling die (6), lay presstressed reinforcing steel (11) in beam (2) or interblock rib (10) and internal-rib (9), the last iron of colligation plate, concreting, tensioned prestressing bar (11), stripping, in beam limit hollow section (4) and the central hollow district (5) permanent assembling die (6) is installed, in the beam limit hollow section (4) permanent assembling die (6) towards with its adjacent beam (2) direction consistent, permanent assembling die (6) towards consistent in central hollow district (5) with the long span direction of hollow building cover post net.
2, permanent assembling die (6) is combined by bar-shaped filler (7) and connector (8), in each permanent assembling die (6), be provided with internal-rib (9) between the adjacent bar-shaped filler (7), be provided with interblock rib (10) between the adjacent permanent assembling die (6), the interblock rib (10) between same row or the permanent assembling die of same row (6) is located on the same line.